/* ==========================================================================
   乐盈主站 / leying-portal.com.cn — 共享样式表 /assets/site.css
   展览画册式布局 · 近单色体系 · 锐利直角与精密细线
   ========================================================================== */

:root{
  /* 色彩体系 */
  --navy-900:#08182E;
  --navy-700:#0F2E52;
  --navy-500:#1C4F80;
  --blue-300:#7A93AE;
  --mist-100:#E9EFF6;
  --paper:#FCFDFF;
  --orange-500:#FF6A2B;
  --orange-700:#C7491A;
  --mint-500:#2BB894;
  --mint-700:#17715C;
  --ink-900:#10161F;
  --amber-500:#E4A11B;

  /* 字体 */
  --font-display:"HarmonyOS Sans SC","Noto Sans SC",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  /* 网格与节奏 */
  --shell:1320px;
  --gutter:72px;
  --col-gap:24px;
  --header-space:96px;

  /* 线条 */
  --line:rgba(28,79,128,.18);
  --line-soft:rgba(28,79,128,.10);
  --line-dark:rgba(122,147,174,.30);
  --line-dark-soft:rgba(122,147,174,.14);

  /* 动效 */
  --ease:cubic-bezier(.22,.61,.36,1);
}

@media (max-width:1080px){
  :root{ --gutter:40px; --col-gap:20px; --header-space:92px; }
}
@media (max-width:640px){
  :root{ --gutter:20px; --col-gap:14px; --header-space:84px; }
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */
*,*::before,*::after{ box-sizing:border-box; }
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
body{
  margin:0;
  padding-top:var(--header-space);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--ink-900);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{ max-width:100%; display:block; }
a{ color:inherit; }
button{ font:inherit; color:inherit; background:none; border:0; padding:0; cursor:pointer; }
h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.12;
  margin:0 0 .55em;
  color:var(--ink-900);
}
p{ margin:0 0 1em; }
hr{ border:0; border-top:1px solid var(--line); margin:56px 0; }
strong{ font-weight:800; }
::selection{ background:var(--orange-500); color:var(--navy-900); }
:focus-visible{
  outline:2px solid var(--orange-500);
  outline-offset:3px;
}

/* --------------------------------------------------------------------------
   工具类
   -------------------------------------------------------------------------- */
.visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  margin:-1px;padding:0;border:0;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);
  white-space:nowrap;
}
.skip-link{
  position:fixed;
  top:10px;left:50%;
  z-index:200;
  transform:translate(-50%,-200%);
  padding:12px 22px;
  background:var(--orange-500);
  color:var(--navy-900);
  font-weight:800;
  font-size:14px;
  text-decoration:none;
  border:1px solid var(--navy-900);
  transition:transform .2s var(--ease);
}
.skip-link:focus{ transform:translate(-50%,0); }

/* --------------------------------------------------------------------------
   容器 / 栅格 / 正文
   -------------------------------------------------------------------------- */
.container{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--narrow{ max-width:900px; }

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--col-gap);
}

.prose{
  max-width:42em;
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--ink-900);
}
.prose > *:last-child{ margin-bottom:0; }
.prose h2{ font-size:clamp(24px,2.6vw,34px); margin:1.6em 0 .6em; }
.prose h3{ font-size:clamp(19px,2vw,23px); margin:1.5em 0 .5em; }
.prose a{
  color:var(--orange-700);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}
.prose ul,.prose ol{ padding-left:1.3em; margin:0 0 1.2em; }
.prose li{ margin-bottom:.5em; }
.prose--invert{ color:var(--mist-100); }
.prose--invert h2,.prose--invert h3{ color:var(--paper); }
.prose--invert a{ color:var(--orange-500); }

/* --------------------------------------------------------------------------
   面包屑 / 展签 / 章节编号
   -------------------------------------------------------------------------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  list-style:none;
  margin:0 0 30px;
  padding:0;
  font-size:12.5px;
  letter-spacing:.11em;
  color:var(--blue-300);
}
.breadcrumb__item{ display:inline-flex; align-items:center; gap:10px; }
.breadcrumb__item a{ color:var(--navy-700); text-decoration:none; }
.breadcrumb__item a:hover{ color:var(--orange-700); text-decoration:underline; text-underline-offset:4px; }
.breadcrumb__sep{ color:var(--blue-300); }
.breadcrumb [aria-current="page"]{ color:var(--ink-900); font-weight:700; }

.tag{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-body);
  font-size:12px;
  font-weight:600;
  letter-spacing:.12em;
  line-height:1;
  color:var(--navy-500);
  text-transform:uppercase;
}
.tag::before{
  content:"";
  flex:0 0 auto;
  width:8px;height:8px;
  border:1px solid currentColor;
}
.tag--mint{ color:var(--mint-700); }
.tag--amber{ color:#8A5E06; }

.status-dot{
  display:inline-block;
  width:8px;height:8px;
  background:var(--mint-500);
  border-radius:50%;
  box-shadow:0 0 0 3px rgba(43,184,148,.18);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.status-dot[data-state="pending"]{
  background:var(--blue-300);
  box-shadow:0 0 0 3px rgba(122,147,174,.18);
}
.status-dot[data-state="alert"]{
  background:var(--amber-500);
  box-shadow:0 0 0 3px rgba(228,161,27,.18);
}

.section-index{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(56px,9vw,132px);
  line-height:.86;
  letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;
  color:transparent;
  -webkit-text-stroke:1px var(--navy-500);
  margin:0 0 18px;
}
.section-index--solid{
  color:var(--orange-500);
  -webkit-text-stroke:0;
}

/* --------------------------------------------------------------------------
   按钮
   -------------------------------------------------------------------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1;
  text-decoration:none;
  border:1px solid transparent;
  border-radius:0;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn--primary{
  background:var(--orange-500);
  color:var(--navy-900);
  border-color:var(--orange-500);
}
.btn--primary:hover{ background:#FF8347; border-color:#FF8347; }
.btn--ghost{
  background:transparent;
  color:var(--navy-700);
  border-color:var(--navy-500);
}
.btn--ghost:hover{ background:var(--navy-700); color:var(--paper); border-color:var(--navy-700); }
.btn--sm{ padding:9px 18px; font-size:13.5px; }
.btn--block{ width:100%; }
.btn[disabled]{ opacity:.45; cursor:not-allowed; }

/* --------------------------------------------------------------------------
   页头 —— 悬浮胶囊浮岛
   -------------------------------------------------------------------------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  padding:14px var(--gutter);
  transition:padding .28s var(--ease);
}
.site-header[data-scrolled]{ padding-top:8px; }

.site-header__inner{
  position:relative;
  max-width:var(--shell);
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:14px;
  padding:9px 10px 9px 18px;
  border-radius:999px;
  background:rgba(8,24,46,.92);
  border:1px solid var(--line-dark);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  color:var(--mist-100);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:padding .28s var(--ease);
}
.site-header[data-scrolled] .site-header__inner{ padding:5px 8px 5px 14px; }

/* 品牌 */
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  min-width:0;
  text-decoration:none;
  color:inherit;
}
.brand__mark{
  flex:0 0 auto;
  display:grid;
  place-items:center;
  width:34px;height:34px;
  border:1px solid var(--orange-500);
  background:rgba(255,106,43,.10);
  color:var(--orange-500);
  font-family:var(--font-display);
  font-size:11px;
  font-weight:900;
  letter-spacing:.06em;
  line-height:1;
}
.brand__text{ display:flex; flex-direction:column; min-width:0; }
.brand__name{
  font-family:var(--font-display);
  font-size:15px;
  font-weight:900;
  letter-spacing:.02em;
  line-height:1.25;
  white-space:nowrap;
}
.brand__note{
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.35;
  color:var(--blue-300);
  white-space:nowrap;
}

/* 导航 */
.site-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
  min-width:0;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
  list-style:none;
  margin:0;padding:0;
}
.site-nav__list a{
  display:inline-block;
  padding:9px 13px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  text-decoration:none;
  color:var(--mist-100);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.site-nav__list a:hover{ background:rgba(122,147,174,.20); }
.site-nav__list a[aria-current="page"]{
  background:var(--orange-500);
  color:var(--navy-900);
  font-weight:800;
}

.site-nav__utility{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:6px;
  padding-left:10px;
  border-left:1px solid var(--line-dark);
}
.utility-link{
  padding:9px 11px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  white-space:nowrap;
  text-decoration:none;
  color:var(--blue-300);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.utility-link:hover{ color:var(--mist-100); background:rgba(122,147,174,.18); }

.site-nav__cta{ border-radius:999px; margin-left:6px; }

/* 移动菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:9px 15px;
  border-radius:999px;
  border:1px solid var(--line-dark);
  color:var(--mist-100);
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.06em;
  transition:background .2s var(--ease);
}
.nav-toggle:hover{ background:rgba(122,147,174,.18); }
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;height:1px;
  background:currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;
  width:16px;height:1px;
  background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle__bars::before{ top:-5px; }
.nav-toggle__bars::after{ top:5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{ transform:translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{ transform:translateY(-5px) rotate(-45deg); }

/* 滚动进度 */
.scroll-progress{
  position:fixed;
  top:0;left:0;right:0;
  height:2px;
  background:var(--orange-500);
  transform:scaleX(0);
  transform-origin:0 50%;
  z-index:95;
  pointer-events:none;
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.site-footer{
  position:relative;
  margin-top:120px;
  background:var(--navy-900);
  color:var(--mist-100);
  border-top:1px solid var(--navy-500);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(var(--line-dark-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-dark-soft) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.site-footer__grid{
  position:relative;
  max-width:var(--shell);
  margin-inline:auto;
  padding:78px var(--gutter) 34px;
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr) minmax(0,.9fr);
  gap:44px 32px;
}

.footer-brand__name{
  font-family:var(--font-display);
  font-size:22px;
  font-weight:900;
  letter-spacing:-.01em;
  line-height:1.2;
  margin:0 0 10px;
  color:var(--paper);
}
.footer-brand__note{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--orange-500);
  margin:0 0 18px;
}
.footer-brand__service{
  max-width:30em;
  font-size:14.5px;
  line-height:1.8;
  color:var(--blue-300);
  margin:0;
}

.footer-col__title{
  display:flex;
  align-items:center;
  gap:9px;
  margin:0 0 18px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--blue-300);
}
.footer-col__title::before{
  content:"";
  width:14px;height:1px;
  background:var(--orange-500);
}
.footer-col ul{
  list-style:none;
  margin:0;padding:0;
  display:grid;
  gap:11px;
}
.footer-col a{
  font-size:14.5px;
  line-height:1.5;
  text-decoration:none;
  color:var(--mist-100);
  transition:color .2s var(--ease);
}
.footer-col a:hover{
  color:var(--orange-500);
  text-decoration:underline;
  text-underline-offset:4px;
}

.footer-contact{
  position:relative;
  max-width:var(--shell);
  margin-inline:auto;
  padding:26px var(--gutter);
  display:flex;
  flex-wrap:wrap;
  gap:12px 44px;
  border-top:1px solid var(--line-dark);
}
.footer-contact__line{
  display:flex;
  align-items:baseline;
  gap:10px;
  margin:0;
  font-size:13px;
  letter-spacing:.05em;
  color:var(--blue-300);
}
.footer-contact__value{
  color:var(--mist-100);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  word-break:break-word;
}

.footer-legal{
  position:relative;
  border-top:1px solid var(--line-dark-soft);
  background:rgba(8,24,46,.6);
}
.footer-legal__inner{
  max-width:var(--shell);
  margin-inline:auto;
  padding:20px var(--gutter) 26px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 28px;
  font-size:12.5px;
  letter-spacing:.05em;
  color:var(--blue-300);
}
.footer-legal__inner p{ margin:0; }
.footer-legal__icp{ color:var(--mist-100); font-variant-numeric:tabular-nums; }

/* --------------------------------------------------------------------------
   卡片 / 图片容器 / 左侧锚点
   -------------------------------------------------------------------------- */
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:26px;
  background:var(--paper);
  border:1px solid var(--line);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.card:hover{ border-color:var(--navy-500); }
.card__index{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--orange-700);
  font-variant-numeric:tabular-nums;
}
.card__title{
  margin:0;
  font-family:var(--font-display);
  font-size:20px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.35;
  color:var(--ink-900);
}
.card__text{
  margin:0;
  font-size:15.5px;
  line-height:1.78;
  color:var(--navy-700);
}
.card__foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
}

.media{
  --media-ratio:16/10;
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--navy-700);
  border:1px solid var(--line-dark-soft);
}
.media__frame{
  display:block;
  width:100%;
  aspect-ratio:var(--media-ratio);
  background:
    linear-gradient(135deg,var(--navy-700) 0%,var(--navy-900) 55%,var(--navy-500) 100%);
}
.media__frame img{
  width:100%;height:100%;
  object-fit:cover;
  display:block;
}
.media__label{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:12px 16px;
  background:rgba(8,24,46,.92);
  color:var(--mist-100);
  font-size:12.5px;
  letter-spacing:.06em;
  line-height:1.5;
  transform:translateY(100%);
  transition:transform .3s var(--ease);
}
.media:hover .media__label,
.media:focus-within .media__label{ transform:translateY(0); }

.rail{
  position:sticky;
  top:calc(var(--header-space) + 24px);
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:2px;
  align-content:start;
}
.rail__link{
  display:grid;
  grid-template-columns:auto 1fr;
  align-items:baseline;
  gap:12px;
  padding:12px 14px;
  text-decoration:none;
  color:var(--blue-300);
  border-left:1px solid var(--line);
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.rail__link:hover{ color:var(--navy-700); background:var(--mist-100); }
.rail__link.is-active,
.rail__link[aria-current="true"]{
  color:var(--ink-900);
  background:var(--mist-100);
  border-left-color:var(--orange-500);
}
.rail__index{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--orange-700);
  font-variant-numeric:tabular-nums;
}
.rail__label{
  font-family:var(--font-display);
  font-size:15px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.4;
}

/* --------------------------------------------------------------------------
   滚动显现
   -------------------------------------------------------------------------- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
.has-js [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */
@media (max-width:1240px){
  .site-nav__list a{ padding:8px 11px; font-size:13.5px; }
  .utility-link{ font-size:12.5px; padding:8px 9px; }
  .brand__note{ display:none; }
}

@media (max-width:1080px){
  .site-nav__utility{ display:none; }
  .site-footer__grid{ grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr); }
  .site-footer{ margin-top:96px; }
}

@media (max-width:900px){
  .site-header{ padding:10px var(--gutter); }
  .site-header[data-scrolled]{ padding-top:8px; }
  .site-header__inner,
  .site-header[data-scrolled] .site-header__inner{
    padding:8px 8px 8px 14px;
    gap:10px;
  }
  .nav-toggle{ display:inline-flex; }

  .site-nav{
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    margin-left:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    padding:14px;
    border-radius:20px;
    background:rgba(8,24,46,.97);
    border:1px solid var(--line-dark);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    max-height:calc(100vh - var(--header-space) - 24px);
    overflow-y:auto;
  }
  .site-nav[data-open]{ display:flex; }

  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }
  .site-nav__list a{
    display:block;
    padding:12px 16px;
    border-radius:14px;
    font-size:16px;
  }
  .site-nav__utility{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    margin:0;
    padding:12px 0 0;
    border-left:0;
    border-top:1px solid var(--line-dark);
  }
  .utility-link{
    padding:10px 16px;
    border-radius:14px;
    font-size:14px;
    color:var(--mist-100);
  }
  .site-nav__cta{
    width:100%;
    margin-left:0;
    padding:14px 20px;
    border-radius:14px;
    font-size:15px;
  }

  .site-footer__grid{
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
    padding-top:56px;
    gap:36px 24px;
  }
  .footer-brand{ grid-column:1/-1; }
  .footer-contact{ flex-direction:column; gap:10px; }
  .rail{ position:static; }
}

@media (max-width:640px){
  body{ font-size:16px; }
  .brand__mark{ width:30px;height:30px; }
  .brand__name{ font-size:14px; }
  .site-footer{ margin-top:72px; }
  .site-footer__grid{ grid-template-columns:minmax(0,1fr); padding-bottom:24px; }
  .footer-brand__name{ font-size:20px; }
  .footer-legal__inner{ flex-direction:column; gap:8px; }
  .section-index{ -webkit-text-stroke-width:1px; }
  .card{ padding:20px; }
}

/* 触屏与降低动效 */
@media (hover:none){
  .media__label{ transform:none; }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .has-js [data-reveal]{
    transform:none !important;
    transition:opacity .2s linear;
    transition-delay:0ms !important;
  }
  .media__label{ transform:none; }
  .site-header,
  .site-header__inner,
  .site-nav__list a,
  .nav-toggle__bars::before,
  .nav-toggle__bars::after{ transition:none; }
  .scroll-progress{ display:none; }
}